How to change the Datagrid page size by code

[yogesh]

Hi,

How to change data grid page size  bye code  for example

default selected is 10 from the list [10,20,30,40,50]

i want to select 20 as default but want to give 10 in option list

[yogesh]

i got the answer

    $('#dg').datagrid({
            pageNumber:1,
            pageSize:20
        });